Take SPY at a strike of $738, per lot of 100 that's $73 800. Take 14 lots, give or take, to make a cool million.

SPY260821P00738000 (OCC symbol: PUT on SPY expiring the 21th of August 2026 at a strike of $738) is $12.20 as I type this, so $1220 per lot. So $16 800 to protect for a month. So $200 K per year.

A solid 20% yearly, unless my math is way off.

Now of course you can buy, instead of a PUT, a PUT debit spread, or you can buy further from the strike, or you can finance or partially finance your PUT or PUT debit spread with a CALL you'd sell (turning it into a covered strangle) etc. That's not the point of this exercise though. And anyway I doubt many retirees have the know-how to do that.

In any case it's well known that the costs to hedge are extremely high.

In 1929 those who had 10% gold for example "only" lost 25% overall: gold has value since thousands of years. My dumb thinking is that if gold has value since thousands of years, there's an extremely high probability that it'll keep value for the few decades I've got left at most.